Anything can be justified or rationalized. Anything at all, good or bad. The measure of something is in it's substance, not it's excuses. Zionism has been a failure from the start, always in ever growing need of propping up, and always in conflict with the values of the religion it wants to represent. Zionism has one terminal weakness, specifically that it has mistreated an entire indigenous population. Instead of shallow arguments about what is or isn't "Zionism" why not explain why Jews from Europe have the right to displace and mistreat locals who had no responsibility for Jewish problems in Europe.
UN: Satellite images show Temple of Bel in Syria 'destroyed' (AP)
from the article: Zionism is not an ideology